Question Character controller crawling

Hey,
I want to add the ability to crawl to my player controller, but it's impossible to change the orientation of the character controller's collider, do you have a solution to this problem?

 

To my thinking, crawling is simply a slow, lower form of crouching and walking.

This Character-Controller-based player controller can crouch and do all kinds of other stuff:

https://forum.unity.com/threads/a-basic-first-person-character-controller-for-prototyping.1169491/